add a test to make sure instantiation is ok

Author: ardunn

automatminer/tests/test_presets.py

@@ -5,6 +5,7 @@
 """
 import unittest
 
+from automatminer import MatPipe
 from automatminer.presets import get_preset_config
 
 AF_KEY = "autofeaturizer"
@@ -19,31 +20,43 @@ def test_production(self):
         prod = get_preset_config("production")
         for k in KEYSET:
             self.assertTrue(k in prod.keys())
+        MatPipe(**prod)
 
     def test_debug(self):
         debug = get_preset_config("debug")
         for k in KEYSET:
             self.assertTrue(k in debug.keys())
+        MatPipe(**debug)
 
     def test_debug_single(self):
         debug_single = get_preset_config("debug_single")
         for k in KEYSET:
             self.assertTrue(k in debug_single.keys())
+        MatPipe(**debug_single)
 
     def test_express(self):
         express = get_preset_config("express")
         for k in KEYSET:
             self.assertTrue(k in express.keys())
+        MatPipe(**express)
+
+    def test_express_single(self):
+        express_single = get_preset_config("express_single")
+        for k in KEYSET:
+            self.assertTrue(k in express_single.keys())
+        MatPipe(**express_single)
 
     def test_heavy(self):
         heavy = get_preset_config("heavy")
         for k in KEYSET:
             self.assertTrue(k in heavy.keys())
+        MatPipe(**heavy)
 
     def test_caching_powerup(self):
         cache_src = "./somefile.json"
         prod = get_preset_config("production", cache_src=cache_src)
         self.assertEqual(prod[AF_KEY].cache_src, cache_src)
+        MatPipe(**prod)
 
     def test_missing(self):
         with self.assertRaises(ValueError):